Honestly I wouldn't bother - 1Gbps is plenty for many years in the future. It is more robust than fibre and considerably cheaper. I have just run Cat5e in my own house, including damaging walls etc. Fibre never even crossed my mind.
If you have a huge house and you're going to exceed 100m, then fair enough - even then I'd be considering just having 2x100m and a switch in the middle.
I would strongly recommend not running Cat5e. If you have any sort of home NAS then it is not enough in the near future. The marginal additional cost of going to Cat6a cable and future proofing yourself to 10GbE is well worth it, even if you save yourself some money and fit Cat5e face plates which are a lot cheaper than Cat6a ones. It's much easier to swap out the face plates than replace the cable, which will require lifting flooring etc. as opposed to screwing off a faceplate puching down a new module and screwing it back on the wall.
1Gbps is plenty. That is enough to transfer 1TB in under 3 hours. Plenty for streaming and backups. What home use case needs something faster than this?
Conversely I'd argue that 1 Gbps is the bare minimum capability "backbone" you should be installing today. Without considering LAN speeds look at what's happening with Internet access over the past 30 years, its gone from 19.2kbps V.32bis dial-up to 10Gbps XGS-PON. In 1989 you'd be fine running CW1308 all over your house, as its would have been "plenty"...
There are numerous obvious pointers to where things are headed - Terrestrial "broadcast" TV and radio is pretty much dying a long slow death. Everything is moving to on-demand / casting / streaming. Resolutions have moved from PAL/NTSC to HD then 4K now and 8K will be the norm in a few more years. Folks access their data in the cloud. The pandemic has transformed white collar working - more folks will continue to work from home by default, rather than the other way around. The concept of the "office" where everyone comes to work, every day for a lot of industries is now dead.
Not only are there now many gigabit service providers in the UK, we're seeing consumer and small business symmetric *multi-gigabit* offerings from the alt nets like Community Fibre. Its no good have cabling a house supporting 1 Gbps when providers could offer 10 Gbps on a broadband service. It's the wrong way around - the LAN should always be faster than the WAN - or at very least match what the WAN is capable off delivering now or not too far down the track - the whole entire point of putting the capability in now to be able serve you in 10 to 15 years time.
If someone is re-cabling their home then for the marginal 20% uplift in cost specify at least Cat6 standard. Please also don't mix and match Cat5e and Cat6/6A components, that is a terrible idea, just to save a few pennies.



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